JP2006137470A - Article packaging structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily and appropriately seal an article to be packaged with a packaging film and easily release the sealed state. <P>SOLUTION: An article packaging structure for the article to be packaged such as a cuplike container with instant noodles or the like received with a heat-shrinkable film or the like is equipped with an electrostatic sealed part 3 formed by electrostatically sealing a two-layered fold 7 formed by folding a free end 5a of a first side part 5 of one of right and left side parts of the packaging film toward a base end 5b to overlie the external surface of a second side part 6 of the other of the right and left side parts of the film. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a packaging structure for a product having a seal portion which is sealed in a state where a free end portion of one side portion of the packaging film is overlapped with an outer surface side of the other side portion.

Conventionally, for example, as shown in Patent Document 1 below, in envelope pasting and packaging with a heat-shrinkable synthetic resin film, when the surfaces to be bonded to each other are overlapped, a label is inserted between the surfaces to be bonded, An electrostatic seal is applied to the overlapped seal portion, and then a product package is formed by heating and shrinking.
JP-A-61-81932

  As shown in Patent Document 1, electrostatic seal portions are formed along the longitudinal direction of the packaging film by electrostatically sealing the left and right sides of the packaging film having heat shrinkability with each other. In this case, there is an advantage that a package having an excellent appearance can be formed by preventing formation of heat seal marks or the like in the electrostatic seal portion, but the package made of the packaging film is opened. There is a problem that the work to do is difficult.

  That is, as shown in FIG. 15, by picking the container bottom surface substantially central portion of the electrostatic seal portion 3B formed along the longitudinal direction of the packaged object 1B made of a cup-shaped container, along the side surface of the container 1B and the like. By pulling in a direction along the fusing seal portion 4B formed horizontally (in the direction indicated by the arrow in FIG. 15), the fusing seal portion 4B is broken to open the package 2B. It is possible to take out the container 1B. However, the electrostatic seal portion 3B formed by electrostatic sealing in a state where the left and right side portions of the packaging film are polymerized is closely attached to both sides of the packaging film as shown in FIG. Since it joined in the state which was made, it was difficult to pick this and there existed a problem that the opening operation | work of the package 2B could not be performed easily.

  In the invention disclosed in Patent Document 1, a label having a knob is inserted when the sides of the packaging film are overlapped, and the package is opened by picking and pulling the knob. Configure to get. However, when the label having the knob portion is provided on the package, it is troublesome to arrange the label at a predetermined position on the package and adhere it to the packaging film in an appropriate state. There exists a problem that the external appearance of a package deteriorates by arrange | positioning.

  The present invention has been made in view of the above points, and a packaging structure for a product that can easily and properly seal an article to be packaged with a packaging film and can easily open the sealed state. Is to provide.

  The invention according to claim 1 wraps the folded portion of the two-layer structure formed by folding the free end portion of the first side portion formed of one of the left and right side portions of the packaging film toward the base end portion side. An electrostatic seal portion formed by electrostatic sealing in a state of being superimposed on the outer surface side of the second side portion that is the other of the left and right side portions of the film is provided.

  The invention according to claim 2 is the product packaging structure according to claim 1, wherein the free end portion of the first side portion is folded back to the joint surface side with respect to the second side portion, and the folded first portion is returned. This is an electrostatic seal in which the free end portion of the side portion is superimposed on the outer surface side of the second side portion.

  According to a third aspect of the present invention, in the product packaging structure according to the first or second aspect, a printing layer to which a printing ink is applied is provided on a portion excluding the electrostatic seal portion.

  According to the first aspect of the present invention, the folded portion of the two-layer structure formed by folding the free end portion of the first side edge portion of the packaging film toward the proximal end portion is used as the second portion of the packaging film. By forming an electrostatic seal portion by electrostatically sealing in a state of being superimposed on the outer surface side of the side portion, the first side portion and the second side portion of the packaging film constituting the electrostatic seal portion There is an advantage that a fingernail or the like can be easily inserted between them, and the package can be easily opened by picking and pulling the folded portion of the two-layer structure.

  According to the second aspect of the present invention, the free end portion of the first side portion is folded back so as to contact the outer surface side of the second side portion, so that the free end portion is inside the electrostatic seal portion. Since it is disposed and protected on the side, it is possible to effectively prevent the occurrence of a situation in which the free end portion is peeled off and the appearance of the package is impaired.

  In the invention which concerns on Claim 3, since the printing layer to which the printing ink was apply | coated was provided in the part except the said electrostatic seal part, the folding | returning part of the said 2 layer structure is made into the outer surface of the other side part of a packaging film. When electrostatically sealing in a state of being stacked on the side, there is an advantage that it is possible to effectively prevent the sealing performance from being impaired without impairing the appearance of the package.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a packaging structure of a product formed by shrink-wrapping an article to be packaged 1 made of a cup-shaped container in which instant noodles and the like are accommodated by a package 2. Specifically, a packaging film having heat shrinkability such as polypropylene, polyethylene, polystyrene, polyvinyl chloride, polyethylene terephthalate, polybutylene terephthalate, or polyamide (a laminate of a plurality of film materials made of the above resin materials, etc. The package body 2 for shrink-wrapping the article to be packaged 1 composed of a cup-shaped container or the like is configured by electrostatically sealing and fusing and sealing.

  The packaging body 2 is formed by fusing and sealing the packaging film with the electrostatic seal portion 3 having a predetermined width formed by overlapping and sealing the left and right sides of the packaging film with each other. A fusing seal portion 4 is provided. As shown in FIG. 2, the electrostatic seal portion 3 of the packaging body 2 includes a free end portion 5 a of the first side portion 5, which is one of the left and right side portions of the packaging film, extending about 15 mm. A folded portion 7 having a two-layer structure is provided that is folded on the side, that is, on the side of the joint surface with respect to the second side portion 6 that is the other of the left and right side portions of the packaging film. Then, the free end portion 5a of the first side portion 5 folded back to the bonding surface side with respect to the second side portion 6 of the packaging film is in contact with the outer surface side of the second side portion 6, that is, the article 1 to be packaged. A voltage of about 15 kV to 20 kV is applied to the overlapped portion via an electrostatic sealing machine in a state where the surface is located on the side opposite to the contacted surface, whereby the first side portion 5 is The electrostatic seal portion 3 is formed in which the free end portion 5a is in close contact with the second side portion 6 and the base end portion 5b of the first side portion 5 respectively.

  As described above, the packaging body 2 includes the packaging object 1 in a cylindrical packaging body, which will be described later, formed by overlapping and sealing the first and second side portions 5 and 6 of the packaging film. In the inserted state, both ends of the cylindrical package are melt-sealed to form the melt-sealed seal portion 4, and after the portion to be packaged 1 is covered, this is heated and thermally contracted, It is comprised so that it may be in the state closely_contact | adhered to the outer surface of the package 1. FIG.

  FIG. 3 shows a packaging apparatus for shrink wrapping the article 1 to be packaged. This wrapping apparatus folds down one side part of the packaging film 9 fed out from the feeding roll 8, that is, the free end part 5a of the first side part 5, thereby turning the folded part 7 (see FIG. 2), a former 11 for guiding the first side portion 5 and the second side portion 6 of the packaging film 9 downward and bending the packaging film 9 into a cylindrical shape, An electrostatic seal machine 12 that electrostatically seals the folded portion 7 formed in the guide portion 10 to the second side portion 6 to form the electrostatic seal portion 3, and this electrostatic seal is performed. In a state in which the article to be packaged 1 is inserted into the cylindrical package body 2a formed by the above, a seal cutter 13 that melts and seals both ends of the cylindrical package body 2a positioned before and after the package article 1 and the article to be packaged 1 are enclosed. The package 2b is heated and thermally contracted. And a device 14.

  As shown in FIGS. 4 and 5, the guide portion 10 extends along a first guide portion 15 having a U-shaped cross section and a lower surface of a horizontal plate 15 a provided at an upper end portion of the first guide portion 15. The second guide portion 16 having an L-shaped cross section and a third guide portion 17 disposed below a horizontal plate 16 a provided at the upper end portion of the second guide portion 16, and the third guide portion 17. At the front end portion thereof (upstream side in the conveyance direction α of the packaging film 9), a rearwardly rising guide surface, that is, a guide surface 17a inclined so that the downstream side is positioned upward is provided. And the 1st side part 5 of the said film 9 for packaging is introduce | transduced between the said 1st guide part 15 and the 2nd guide part 16, and the free end part 5a of the said 1st side part 5 is said 3rd. By guiding downward along the guide surface 17a of the guide portion 17, the free end portion 5a is folded back to the lower side of the base end portion 5b of the first side portion 5, and then the free end portion 5a and the base end The part 5b is pressed from above and below by a pressing roller or a pressing guide (not shown) so as to have a crease.

  A method for packaging a product for shrink-wrapping the article to be packaged 1 using the packaging apparatus will be described below. The packaging film 9 fed from the feeding roll 8 is supplied to the installation portion of the guide portion 10 to form the folded portion 7 on the first side portion 5 of the packaging film 9 as shown in FIG. Then, the packaging film 9 is supplied to the installation portion of the former 11 and bent into a cylindrical shape as shown in FIG. 7, and then supplied to the electrostatic sealing machine 12, and the first side portion 5 of the packaging film 9 is supplied. In the state where the free end portion 5a is overlapped on the outer surface side of the second side portion 6, a predetermined voltage is applied to the overlapping portion, whereby the first side portion 5 and the second side portion 5 of the packaging film 9 are applied. A cylindrical package 2a having an electrostatic seal portion 3 (see FIG. 2) in which the side portion 6 is continuously electrostatically sealed is formed.

  Next, by sequentially fusing and sealing both ends of the cylindrical package 2a into which the article to be packaged 1 is inserted in the installation portion of the seal cutter 13 to form a fusing seal portion 4, as shown in FIG. A package 2b in which the package 1 is enclosed is formed. Thereafter, the packaging body 2b is supplied into the heating device 14, and hot air is blown onto the packaging body 2b. As shown in FIG. 1, the packaging body 2 in a state of being in close contact with the package 1 is formed. .

  As described above, the folded portion 7 having a two-layer structure formed by folding the free end portion 5a of the first side portion 5 composed of one of the left and right side portions of the packaging film 9 to the base end portion 5b side, Since the electrostatic seal portion 3 is formed by electrostatic sealing in a state of being overlapped on the outer surface side of the second side portion 6 which is the other of the left and right side portions of the packaging film 9, the folded portion 7 is picked and packaged. The operation of opening the body 2 can be easily performed.

  That is, the electrostatic seal portion 3 is formed with a folded portion 7 having a two-layer structure in which the free end portion 5a of the first side portion 5 is folded, so that it can be compared with the conventional example shown in FIG. While the thickness of the electrostatic seal portion 3 is increased, an arcuate curved portion 7a is formed on the side portion of the folded portion 7 as shown in FIG. 2, and therefore, the folded portion 7 along the curved portion 7a. A finger can be easily inserted between the second side portion 6 and the second side portion 6. Therefore, by picking up the folded portion 7 and pulling it in the direction along the fused seal portion 4 as shown in FIG. 9, the fused seal portion 4 is broken and the folded portion 7 and the second side portion are also broken. The package 2 can be easily opened by peeling off the electrostatic seal portion 3 from 6.

  Instead of the above embodiment, as shown in FIG. 10, the free end portion 5 a of the first side portion 5 is folded back to the side opposite to the joint surface of the second side portion 6, and the first side portion 5 In a state where the base end portion 5b is in contact with the second side portion 6, the free end portion 5a and the base end portion 5b of the first side portion 5 and the second side portion 6 are electrostatically sealed. However, as shown in FIG. 2, the above-mentioned free play can be performed by electrostatically sealing the free end portion 5a of the first side portion 5 on the outer surface side of the second side portion 6. It is desirable that the end portion 5 a be configured to be covered with the base end portion 5 b of the first side portion 5. When configured in this way, the free end portion 5 a is located on the inner side of the electrostatic seal portion 3, that is, between the base end portion 5 b of the first side portion 5 and the second side portion 6. Since it arrange | positions and is protected, there exists an advantage that it can prevent effectively that the free end part 5a of the said 1st side part 5 peels.

  Further, as shown in FIGS. 11 and 12, the free end portion 5a of the first side portion 5 is double-folded to form folded portions 18a and 18b having a three-layer structure, and the folded portion 18 having the three-layer structure is formed. It is also possible to form a four-layer electrostatic seal portion by electrostatically sealing in a state where it is in contact with the outer surface of the second side portion 6.

  Further, when printing is performed on the package 2, it is necessary to provide a structure in which a printing layer 20 coated with printing ink is provided on a portion other than the electrostatic seal portion 3. For example, as shown in FIG. 13, when the printed layer 20 is provided on at least a part or the whole of the packaging body 2 on the outer wall surface of the packaging body 2, the first side portion 5 constituting the folded portion 7. The free end portion 5a and the second side portion 6 are each provided with a non-application portion 21 for printing ink, and the print layer 20 is provided in a portion other than the non-application portion 21, whereby the first When the free end portion 5a and the base end portion 5b of the first side portion 5 and the second side portion 6 are brought into contact with each other and electrostatically sealed, there is a printing ink coating layer on these contact portions. It is possible to effectively prevent the occurrence of a situation where the electrostatic sealing force is insufficient due to this.

  On the other hand, when the printed layer 20 is provided on at least a part or the whole of the package 2 on the inner wall surface side of the package 2, the free end portion 5 a of the first side portion 5 is provided as shown in FIG. 14. When folded back to the joint surface side with respect to the second side portion 6 and electrostatically sealed in a state where the folded free end portion 5a of the first side portion 5 is overlapped with the outer surface side of the second side portion 6, Since there is no coating layer of printing ink at the contact portion between the free end portion 5a and the second side portion 6, it is possible to ensure the sealing performance of the contact portion.

  In addition, although the said embodiment demonstrated the packaging structure of the product which shrink-wraps the to-be-packaged object 1 which consists of cup-shaped containers in which instant noodles etc. were accommodated, it was accommodated with the instant noodles in the said cup-shaped container. The present invention can also be applied to a packaging structure of a product such as tempura or a product stored in a paper box or the like.

It is a perspective view which shows embodiment of the packaging structure of the goods which concern on this invention. It is a plane sectional view showing the important section structure of the packaging structure of goods concerning the embodiment of the present invention. It is explanatory drawing which shows the specific structure of the packaging apparatus used for packaging of goods. It is front sectional drawing which shows the specific structure of a guide part. It is side surface sectional drawing which shows the specific structure of a guide part. It is sectional drawing which shows the state which turned up the free end part of the 1st side part. It is sectional drawing which shows the state which curved the film for packaging in cylindrical shape. It is explanatory drawing which shows the state which inserted the to-be-packaged object in the cylindrical package body. It is a bottom view which shows the opening process of a package. It is a plane sectional view showing another embodiment of the packaging structure of goods concerning the present invention. It is plane sectional drawing which shows another embodiment of the packaging structure of the goods which concern on this invention. It is plane sectional drawing which shows another embodiment of the packaging structure of the goods which concern on this invention. It is plane sectional drawing which shows another embodiment of the packaging structure of the goods which concern on this invention. It is plane sectional drawing which shows another embodiment of the packaging structure of the goods which concern on this invention. It is a bottom view of goods which shows the conventional example of the packaging structure of goods. It is explanatory drawing which shows the specific structure of the electrostatic seal | sticker part in a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Packaged object 2 Package 3 Electrostatic seal part 5 1st side part 5a Free end part 5b Base end part 6 2nd side part 7 Folding part 20 Printing layer

Claims (3)

  The folded portion of the two-layer structure formed by folding the free end portion of the first side portion composed of one of the left and right side portions of the packaging film to the proximal end portion is formed on the left and right sides of the packaging film. A product packaging structure comprising an electrostatic seal portion formed by electrostatic sealing in a state of being overlapped on an outer surface side of a second side portion formed of the other side.   The product packaging structure according to claim 1, wherein the free end portion of the first side portion is folded back to the joint surface side with respect to the second side portion, and the folded free end portion of the first side portion is defined. A product packaging structure, wherein the product is electrostatically sealed in a state of being overlapped on the outer surface side of the second side portion.   3. The product packaging structure according to claim 1 or 2, wherein a printing layer to which printing ink is applied is provided on a portion excluding the electrostatic seal portion.

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